/* * Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software;Designed and Developed mainly by many Chinese * opensource volunteers. you can redistribute it and/or modify it under the * terms of the GNU General Public License version 2 only, as published by the * Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Any questions about this component can be directed to it's project Web address * https://code.google.com/p/opencloudb/. * */ package com.akiban.sql.parser; import com.akiban.sql.StandardException; /** * A DDLStatementNode represents any type of DDL statement: CREATE TABLE, * CREATE INDEX, ALTER TABLE, etc. * */ public abstract class DDLStatementNode extends StatementNode { public static final int UNKNOWN_TYPE = 0; public static final int ADD_TYPE = 1; public static final int DROP_TYPE = 2; public static final int MODIFY_TYPE = 3; public static final int LOCKING_TYPE = 4; private TableName objectName; private boolean initOk; /** sub-classes can set this to be true to allow implicit creation of the main object's schema at execution time. */ boolean implicitCreateSchema; public void init(Object objectName) throws StandardException { initAndCheck(objectName); } /** Initialize the object name we will be performing the DDL on and check that we are not in the system schema and that DDL is allowed. */ protected void initAndCheck(Object objectName) throws StandardException { this.objectName = (TableName)objectName; initOk = true; } /** * Fill this node with a deep copy of the given node. */ public void copyFrom(QueryTreeNode node) throws StandardException { super.copyFrom(node); DDLStatementNode other = (DDLStatementNode)node; this.objectName = (TableName)getNodeFactory().copyNode(other.objectName, getParserContext()); this.initOk = other.initOk; this.implicitCreateSchema = other.implicitCreateSchema; } /** * A DDL statement is always atomic * * @return true */ public boolean isAtomic() { return true; } /** * Return the name of the table being dropped. * This is the unqualified table name. * * @return the relative name */ public String getRelativeName() { return objectName.getTableName() ; } /** * Return the full dot expression name of the * object being dropped. * * @return the full name */ public String getFullName() { return objectName.getFullTableName() ; } public final TableName getObjectName() { return objectName; } /** * Convert this object to a String. See comments in QueryTreeNode.java * for how this should be done for tree printing. * * @return This object as a String */ public String toString() { return ((objectName==null)?"": "name: " + objectName.toString() +"\n") + super.toString(); } }